11) Recommend usage of a tuned Discone or Biconical, followed
by the use of a Yagi or dipole (45 degree - 8 directions) to
facilitate detection and location of the device. The use of a
preamplifier (at least 15-30 dB) is also advised.

12) Examine using a receiver with pan display covering 70 to
150 MHz and step by 1.25 kHz increments. Also repeat steps in
the 225 to 410 range.

14) Of course a spectrum analyzer must also be used, and the
10/30/100/300 kHz RBW settings are suggested (1 kHz yields the
best results).

15) Frequency may or may not be snuggled next to a (or inside
of a) broadcast channel.

16) Broadband diode and feedback detectors may also be
helpful, but don't use them as your primary detection
method.

17) Also watch for variations in the normal 200 kHz channel
spacing and for uneven band crowding.

Here are a few specific frequencies to keep an eye on when
performing TSCM inspections.

A preprogrammed 1000 channel scanner (with a tuned antenna)
will often turn up hostile signals in an area within seconds of
being turned on (provided you know what frequency to watch).

Of course you still have to search the airwaves with a
Spectrum Analyzer, Search Receiver, MSS, and Oscilloscope.

It is easy to configure a single hand held scanner with a few
hundred "known hostile" channels. Set it up to visit the channel
first as a NBFM, and then again as a WBFM (or use two radios).
This radio can be concealed (along with a body worn RF detector
and a small Wavecom box) for the initial walk though before
unloading the "big iron".

This will provide you with a quick check of the RF
environment.

While commercial wireless microphones are found between "DC
and Light" most of the products offers tend to stay clustered
around specific bands and/or frequencies.

35 - 50 MHz (49.890 MHz popular)

54 - 88 MHz

135 - 174 MHz

175 - 216 MHz

450 - 890 MHz

902 - 928 MHz

944 - 960 MHz

Signal bandwidth may below 2 kHz (sliver mod), or as wide as
300 kHz (TV WBFM), but the mean average is 54.52 kHz (72.4 kHz
is the median point)